Question

A survey shows that 45% of the respondents pick option A. Given that 50 people replied, what is the standard error of the proportion

Answer 1

i got the same answer as the other guy, but the answer choices are:

A. 7.04%

B. 14.06%

C. 21.09%

D. 0.07%

Explanation:

Answer 2

The formula for the standard error is this:
σM = σ / √N

where
σM is the standard error
σ is the standard deviation
N is the number of samples

So,
σM = 0.45 / √50
σM = 0.0636 or 6.36%

The standard error is 0.0636